From: Alex Elsayed <eternaleye@gmail.com>
To: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Subject: Re: [PATCH v6 0/5] zram/zsmalloc promotion
Date: Fri, 16 Aug 2013 00:02:45 -0700 [thread overview]
Message-ID: <kukiqe$j4b$2@ger.gmane.org> (raw)
In-Reply-To: 20130816043556.GA6216@gmail.com
Minchan Kim wrote:
> Hi,
>
> On Fri, Aug 16, 2013 at 10:02:08AM +0800, Wanpeng Li wrote:
>> Hi Minchan,
>> On Thu, Aug 15, 2013 at 01:17:53AM +0900, Minchan Kim wrote:
>> >Hi Luigi,
>> >
>> >On Wed, Aug 14, 2013 at 08:53:31AM -0700, Luigi Semenzato wrote:
>> >If you have real swap storage, zswap might be better although I have
>> >no number but real swap is money for embedded system and it has sudden
>> >garbage collection on firmware side if we use eMMC or SSD so that it
>> >could affect system latency. Morever, if we start to use real swap,
>> >maybe we should encrypt the data and it would be severe overhead(CPU
>> >and Power).
>> >
>>
>> Why real swap for embedded system need encrypt the data? I think there
>> is no encrypt for data against server and desktop.
>
> I have used some portable device but suddenly, I lost it or was stolen.
> A hacker can pick it up and read my swap and found my precious
> information. I don't want it. I guess it's one of reason ChromeOS don't
> want to use real swap.
>
> https://groups.google.com/a/chromium.org/forum/#!msg/chromium-os-discuss/92Fvi4Ezego/ZvbrC3L2FG4J
This is when you use dm-crypt. Also, as noted by others, zswap with a fake
backing device that always returns failure (and thus never stores data on
disk) should behave like zram without any physical swap.
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next prev parent reply other threads:[~2013-08-16 7:02 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-14 5:55 [PATCH v6 0/5] zram/zsmalloc promotion Minchan Kim
2013-08-14 5:55 ` Minchan Kim
2013-08-14 5:55 ` [PATCH v6 1/5] zsmalloc: add Kconfig for enabling page table method Minchan Kim
2013-08-14 5:55 ` Minchan Kim
2013-08-14 5:55 ` [PATCH v6 2/5] zsmalloc: add more comment Minchan Kim
2013-08-14 5:55 ` Minchan Kim
2013-08-14 5:55 ` [PATCH v6 3/5] zsmalloc: move it under zram Minchan Kim
2013-08-14 5:55 ` Minchan Kim
2013-08-16 22:00 ` Seth Jennings
2013-08-16 22:00 ` Seth Jennings
2013-08-20 4:21 ` Minchan Kim
2013-08-20 4:21 ` Minchan Kim
2013-08-14 5:55 ` [PATCH v6 4/5] mm: export unmap_kernel_range Minchan Kim
2013-08-14 5:55 ` Minchan Kim
2013-08-14 5:55 ` [PATCH v6 5/5] zram: promote zram from staging Minchan Kim
2013-08-14 5:55 ` Minchan Kim
2013-08-14 15:53 ` [PATCH v6 0/5] zram/zsmalloc promotion Luigi Semenzato
2013-08-14 15:53 ` Luigi Semenzato
2013-08-14 16:17 ` Minchan Kim
2013-08-14 16:17 ` Minchan Kim
2013-08-15 0:18 ` Bob Liu
2013-08-15 0:18 ` Bob Liu
2013-08-15 15:03 ` Seth Jennings
2013-08-16 2:02 ` Wanpeng Li
2013-08-16 2:02 ` Wanpeng Li
[not found] ` <520d883a.a2f6420a.6f36.0d66SMTPIN_ADDED_BROKEN@mx.google.com>
2013-08-16 4:35 ` Minchan Kim
2013-08-16 4:35 ` Minchan Kim
2013-08-16 7:02 ` Alex Elsayed [this message]
2013-08-14 17:40 ` Mel Gorman
2013-08-14 17:40 ` Mel Gorman
2013-08-14 18:15 ` Luigi Semenzato
2013-08-14 18:15 ` Luigi Semenzato
2013-08-14 18:58 ` Minchan Kim
2013-08-14 18:58 ` Minchan Kim
2013-08-15 17:12 ` Mel Gorman
2013-08-15 17:12 ` Mel Gorman
2013-08-16 1:52 ` Bob Liu
2013-08-16 1:52 ` Bob Liu
2013-08-16 1:53 ` Bob Liu
2013-08-16 1:53 ` Bob Liu
2013-08-16 4:26 ` Minchan Kim
2013-08-16 4:26 ` Minchan Kim
2013-08-16 4:55 ` Bob Liu
2013-08-16 4:55 ` Bob Liu
2013-08-16 8:33 ` Mel Gorman
2013-08-16 8:33 ` Mel Gorman
2013-08-16 9:12 ` Mel Gorman
2013-08-16 9:12 ` Mel Gorman
2013-08-16 9:18 ` Bob Liu
2013-08-16 9:18 ` Bob Liu
2013-08-16 12:49 ` Greg Kroah-Hartman
2013-08-16 12:49 ` Greg Kroah-Hartman
2013-08-16 9:12 ` Bob Liu
2013-08-16 9:12 ` Bob Liu
2013-08-19 3:18 ` Minchan Kim
2013-08-19 3:18 ` Minchan Kim
2013-08-19 3:57 ` Bob Liu
2013-08-19 3:57 ` Bob Liu
2013-08-19 4:37 ` Minchan Kim
2013-08-19 4:37 ` Minchan Kim
2013-08-19 5:29 ` Luigi Semenzato
2013-08-19 5:29 ` Luigi Semenzato
2013-08-19 6:07 ` Bob Liu
2013-08-19 6:07 ` Bob Liu
2013-08-19 6:11 ` Minchan Kim
2013-08-19 6:11 ` Minchan Kim
-- strict thread matches above, loose matches on Subject: below --
2013-08-14 5:51 Minchan Kim
2013-08-14 5:51 ` Minchan Kim
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